Just to clear up why one seal is better then the others, its the material used. Years back late 80's early 90's, Felpro and all the other makers removed all the asbestos from the seal material. This left us with a flimsy rope with a little lube impregnated in it. The seals would fall apart in no time if you could even get them in in the first place. The seal from Best is still made the old fashion way and holds together. I would bet they are getting there stock from England. I bought a bunch of seal from there when working on a Stanley a few years back and it was just like the old seals we used to get from Felpro.
We are also glad you have your truck working.
Joe